Evolution equations for extended dihadron fragmentation functions

被引：44
作者：
Ceccopieri, Federico A.
Radici, Marco [1 ]
Bacchetta, Alessandro
机构：
[1] Univ Pavia, Dipartimento Fis Nucl & Teor, I-27100 Pavia, Italy
[2] Univ Parma, Dipartimento Fis, I-43100 Parma, Italy
[3] Ist Nazl Fis Nucl, Sez Pavia, I-27100 Pavia, Italy
[4] DESY, Theory Grp, D-22603 Hamburg, Germany
来源：
PHYSICS LETTERS B | 2007年 / 650卷 / 01期
关键词：
D O I：
10.1016/j.physletb.2007.04.065
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We consider dihadron fragmentation functions, describing the fragmentation of a parton in two unpolarized hadrons, and in particular extended dihadron fragmentation functions, explicitly dependent on the invariant mass, M-h, of the hadron pair. We first rederive the known results on M-h-integrated functions using jet calculus techniques, and then we present the evolution equations for extended dihadron fragmentation functions. Our results are relevant for the analysis of experimental measurements of two-particle-inclusive processes at different energies. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：81 / 89
页数：9
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